package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1=new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1:"+c1);
        Collection c2=new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        c1.addAll(c2);
        System.out.println("c1"+c1);
        System.out.println("c2"+c2);
        c1.retainAll(c2);
        System.out.println(c1);
        System.out.println(c2);
        c1.removeAll(c2);
        System.out.println(c1);
    }
}
